// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#include <pollux/functions/dynamic_udf.h>
#include <iostream>
// This file defines a mock function that will be dynamically linked and
// registered. There are no restrictions as to how the function needs to be
// defined, but the library (.so) needs to provide a `void registry()` C
// function in the top-level namespace.
//
// (note the extern "C" directive to prevent the compiler from mangling the
// symbol name).

namespace kumo::pollux::common::dynamicRegistry {
    template<typename T>
    struct DynamicFunction {
        MELON_ALWAYS_INLINE bool call(int64_t &result) {
            result = 123;
            return true;
        }
    };
} // namespace kumo::pollux::common::dynamicRegistry

extern "C" {
// In this case, we assume that kumo::pollux::register_function
// will be available and resolve when this library gets loaded.
void registry() {
    auto r = kumo::pollux::register_function<kumo::pollux::common::dynamicRegistry::DynamicFunction, int64_t>(
         {"dynamic"});
    std::cout << "call register_function dynamic:" << r << std::endl;
}
}
